Church of St George Rotunda

The Church of St George Rotunda is the oldest preserved building in Sofia, Bulgaria. It stands hidden in a courtyard behind the Sheraton Sofia Hotel Balkan on pl. Sveta Nedelya, surrounded by government and hotel buildings in the centre of the city. The red-brick rotunda dates from the 4th century, when the Roman city of Serdica was an important regional centre, and it has been used as a church through Byzantine, Bulgarian and Ottoman periods, although it served as a mosque for a time under Ottoman rule.

The courtyard is reached through an archway from the main street, and visitors step from the busy road into a quiet enclosed space. Around the rotunda lie the remains of Roman buildings, including streets, columns and walls that belonged to the ancient city. These open-air ruins make the courtyard useful as a short archaeological stop in its own right, and information boards help explain the layers of the site.

Inside, the single circular space is topped by a dome. The interior preserves medieval frescoes from several periods, with the best-known layers dated roughly to the 12th-14th centuries. The paintings include saints and a dome fresco with a ring of prophets, and the older layers can still be seen where later paint has been removed. The church is still used for services, so visitors should be respectful, keep voices low and avoid entering during ceremonies.

A typical visit takes 20-30 minutes, including time in the courtyard. Morning light brings out the texture of the Roman brickwork, and the best vantage point is just inside the courtyard entrance, from where the rotunda is framed by the surrounding modern buildings. The site is rarely crowded, though the interior can feel full when a tour group is inside. It is easy to combine with the nearby Serdica Archaeological Complex, Banya Bashi Mosque and Sveta Nedelya Church, all within a few minutes on foot. Entry is free, and the courtyard can be a calm break from the traffic and crowds on the surrounding squares.